WO1998000748A1 - Procede de representation visuelle tridimensionnelle sur une surface de projection a grand ecran a l'aide d'un projecteur a laser - Google Patents

Procede de representation visuelle tridimensionnelle sur une surface de projection a grand ecran a l'aide d'un projecteur a laser Download PDF

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Publication number
WO1998000748A1
WO1998000748A1 PCT/DE1997/001286 DE9701286W WO9800748A1 WO 1998000748 A1 WO1998000748 A1 WO 1998000748A1 DE 9701286 W DE9701286 W DE 9701286W WO 9800748 A1 WO9800748 A1 WO 9800748A1
Authority
WO
WIPO (PCT)
Prior art keywords
lines
mirror
laser beam
gbpf
polarization
Prior art date
Application number
PCT/DE1997/001286
Other languages
German (de)
English (en)
Inventor
Christoph Mayer
Klaus Lockmann
Original Assignee
Siemens Nixdorf Informationssysteme Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Nixdorf Informationssysteme Ag filed Critical Siemens Nixdorf Informationssysteme Ag
Priority to EP97931632A priority Critical patent/EP0907902B1/fr
Priority to US09/202,444 priority patent/US6109750A/en
Priority to DE59702290T priority patent/DE59702290D1/de
Priority to JP10503730A priority patent/JP2000514201A/ja
Priority to AT97931632T priority patent/ATE196016T1/de
Publication of WO1998000748A1 publication Critical patent/WO1998000748A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/324—Colour aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/363—Image reproducers using image projection screens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/398—Synchronisation thereof; Control thereof

Definitions

  • the invention relates to methods for three-dimensional image display on a large image projection surface by means of a laser projector according to the preambles of claims 1 and 3.
  • a laser projector is used for the two-dimensional display of graphics etc. usable.
  • a color laser projector for example, light of the colors red, green and blue is generated by three lasers.
  • the light rays are deflected horizontally by a rotating polygon mirror.
  • the horizontal deflection allows the display of a screen line.
  • another rotating mirror causes a vertical deflection.
  • the image is projected onto a large-screen projection surface using optics.
  • a laser projector thus enables the display of very large images with particularly brilliant colors.
  • a color laser projector has three lasers for the colors red, green and blue, but the laser principle is the same for all three colors. The different colors for a correspondingly required overall color are only superimposed on one another for a single pixel on the large image projection surface.
  • the laser beams generated by single-mode lasers have a single polarization direction. she have a linearly polarized light.
  • the laser beams generated by multimode lasers have circularly polarized light, ie they have more than one direction of polarization. For example, they have 2, 4, etc. different polarization directions. In extreme cases, their polarizations scatter in all directions.
  • the object of the invention is to specify methods for three-dimensional image display on a large image projection surface by means of the functional principle of a laser projector.
  • the multimode laser beam is thrown onto mirror parts of the polygon mirror, alternating in two different directions, in each case in alternating directions. From the mirror parts of the polygon mirror, lines with the one polarization direction and lines with the other polarization direction are alternately written on the large image projection surface in accordance with the alternating light-polarizing mirror parts.
  • the control of the multimode laser beam is carried out in such a way that in each case on the large-screen projection area first image with only the lines of one polarization direction and a second image only with the lines of the other polarization direction.
  • the two images in each case have the property that they can be combined to form a three-dimensional overall image by a viewer with glasses with a first lens for one and with a second lens for the other polarization direction
  • the monomode laser beam is partially transparent before it strikes a respective first mirror part of the polygon mirror, which ensures deflection onto first lines of successive first and second lines of the large image projection area Mirror steered.
  • the partially transparent mirror is used to deflect a partial beam of the single-mode laser beam.
  • either the deflected partial beam or the undeflected single-mode laser beam is rotated in its polarization direction.
  • the deflected and, if necessary, rotated partial beam is directed from a second direction opposite the first direction to respective associated second mirror parts of the polygon mirror for deflection onto the respective second lines of the successive first and second lines of the large image projection surface.
  • the monomode laser beam is controlled in such a way that a first image with the rotated / non-rotated polarization direction on the first lines and a second image with the non-rotated / rotated polarization direction is formed on the respective second lines of the large image projection surface on the large image projection surface.
  • the two images generated in each case have the property that they can be combined into a three-dimensional overall image by an observer with glasses with a first lens for one and with a second lens for the other polarization direction. Both methods thus enable a viewer to see three-dimensionally on a large-screen projection surface using the functional principle of a laser projector.
  • the laser beam obtained after the partially transparent mirror and the deflected laser beam each have the same energy output. It is particularly easy to continue using the two partial laser beams, since there is no need to adapt the energy outputs to one another.
  • the large image projection area is scanned line by line.
  • the laser beam from one direction is used to write the first lines and the laser beam from the other direction to write the second lines. If, when writing one line at a time, the laser beam is directed onto an absorption surface for writing the other lines, an associated device is not illuminated and heated on the inside. If the laser beam is directed onto a photovoltaic plate, energy can be recovered from the laser beam to a certain degree.
  • FIG. 1 is a schematic diagram of a multimode laser projector according to the invention
  • FIG. 2 shows a basic circuit diagram of a monomode laser projector according to the invention
  • FIG. 3 shows a rotating device from FIG. 2 in a basic illustration for rotating the direction of polarization of the deflected partial laser beam.
  • FIGS. 1 and 2 Only one laser L is shown in FIGS. 1 and 2. In the case of color projectors, lasers L are provided for each of the colors red, green and blue. However, each of these lasers L works on the principle shown, so that only one laser L has to be shown at this point.
  • FIGS. 1 and 2 show the basic parts of a laser projector necessary for understanding the invention.
  • a laser L which has already been addressed, which emits a laser beam LS, a polygon mirror P which is responsible for horizontal laser beam deflection, a further mirror S which is responsible for vertical laser beam deflection, and a controller ST for the Control of the laser beam LS emitted by the laser L.
  • the polygon mirror P responsible for the horizontal deflection of the laser beam LS rotates about an axis.
  • the rotation is indicated by a corresponding arrow around the relevant axis.
  • the further mirror S swings back and forth, also indicated by a corresponding arrow about the corresponding axis.
  • laser L is a multi-mode laser
  • laser L in FIG. 2 is a single-mode laser
  • the basic principle of a laser projector is that the laser beam LS generated by the laser L is thrown onto the polygon mirror P.
  • the polygon mirror P consists of many, for example 32 mirror parts, each of which is responsible for one line of a large-screen projection area GBPF.
  • the mirror parts are from Circumferential course seen sawtooth-shaped.
  • the laser beam LS hits a mirror part in each case.
  • the laser beam LS experiences a linear beam movement in the deflected beam part.
  • the further mirror S is rotated further, the next line on the large image projection surface GBPF can be written with the next mirror part. After all mirror parts have been run through, the further mirror S is reset and the scanning of the large image projection area GBPF can begin again. Overall, a two-dimensional image is displayed in this way.
  • the laser beam LS is thrown onto a polygon mirror P, the mirror parts of which have light-polarizing layers alternating in two polarization directions. This is represented in FIG. 1 by alternately hatched and non-hatched areas. Since the laser beam LS is a multimode laser beam, it can be directed directly onto the polygon mirror P. The polarization directions that correspond to the polarization directions of the polarizing layers of the mirror surfaces are filtered out by the polygon mirror P from the multimode laser beam.
  • a multimode laser is favorably used right from the start, which has only these two polarization directions, because then an optimal energy balance is achieved through minimal energy losses.
  • the coated polygon mirror P describes first lines of successive first and second lines of the large image projection area GBPF with one polarization direction and the respective second lines with the other polarization direction. This is illustrated in FIG. 1 by lines which are shown thicker and thinner.
  • the laser beam LS is controlled via the control ST such that a first image is formed on the large image projection area GBPF only with the lines of one polarization direction and a second image only with the lines of the other polarization direction, such images being generated that A viewer with glasses with a first spectacle lens for one and with a second spectacle lens for the other polarization direction, the images can be summarized from the content into a meaningful three-dimensional overall picture, a three-dimensional image display can be realized with the present laser projector.
  • the principle according to FIG. 1 cannot be used because the laser beam LS is passed on through the differently polarizing coatings of the mirror parts of the polygon mirror P, but the other time because of a mismatching polarization direction between the laser beam LS and the coating is absorbed.
  • the laser beam LS is directed through a partially transparent mirror TS before it is directed onto the polygon mirror P.
  • the polygon mirror P does not require any light-polarizing layer.
  • the mirror parts are simple mirrors.
  • the partially transparent mirror TS deflects a partial beam TSL.
  • the partially transparent mirror TS advantageously has a transparency of 50%, so that the partial beam TSL and the laser beam still passing through the partially transparent mirror TS each have an energy share of 50%.
  • the partial beam TSL is directed into a rotating device D.
  • the rotating device D the polarization direction of the
  • Partial beam TSL preferably rotated by 90 degrees.
  • the partial beam TSL is then directed from the rotating device D onto the polygon mirror P from a different direction than the non-rotated laser beam after the partly transparent mirror TS.
  • first lines with one polarization direction and second lines with the other polarization direction can be described on the large image projection surface GBPF in a manner corresponding to FIG. 1.
  • two images with different directions of polarization can be generated, which can be combined to form a three-dimensional image by a viewer with appropriate glasses already mentioned above.
  • FIG. 3 shows a possible construction of a rotating device D.
  • the laser beam LS arrives on the input side with a polarization direction PR1 and is directed onto a first mirror SP1. This is set, for example, with an xyz spatial coordinate -45 °, -45 °, 0 °.
  • the first mirror Spl rotates the polarization direction PR1 in the polarization direction PR2.
  • the laser beam LS is directed from the first mirror SP1 to a second mirror SP2, which has, for example, the spatial coordinates 0 °, 45 °, -45 °.
  • the second mirror SP2 rotates the polarization direction PR2 in the polarization direction PR3.
  • the laser beam LS is directed from the second mirror SP2 to a third mirror SP3, which has, for example, the spatial coordinates -90 °, a °, 0 °.
  • the third mirror SP3 rotates the polarization direction PR3 in a polarization direction PR4, which at the same time corresponds to the radiation polarization direction PR5 with which the laser beam LS is directed onto the polygon mirror P.
  • the difference between the polarization directions PR1 and PR5 is advantageously 90 degrees.
  • GBPF Large-screen projection area

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Stereoscopic And Panoramic Photography (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

Pour obtenir une représentation visuelle tridimensionnelle sur une surface de projection à grand écran (GBPF) à l'aide d'un projecteur à laser multimode ou monomode, il est prévu dans le premier cas, de diriger le faisceau laser multimode (LS) sur un miroir polygonal (P) avec deux couches polarisant la lumière en alternance dans deux directions différentes, à partir duquel des lignes provenant d'une direction de polarisation et des lignes provenant de l'autre direction de polarisation sont ensuite inscrites en alternance sur la surface de projection à grand écran (GBPF). Dans le second cas, le faisceau laser monomode (LS) est dirigé à travers un miroir (TS) partiellement transparent, puis ensuite, sur le miroir polygonal (P). Un faisceau partiel (TSL) dérivé du miroir partiellement transparent (TS) est tourné dans sa direction de polarisation et dirigé sur le miroir de polarisation (P) depuis une autre direction. Le miroir polygonal (P) dirige en alternance l'un des faisceaux incidents, puis l'autre, sur la surface de projection à grand écran (GBPF) et inscrit ainsi en alternance des lignes provenant d'une direction de polarisation et des lignes provenant de l'autre direction de polarisation sur la surface de projection à grand écran (GBPF). Des images pouvant être visualisées en trois dimensions à l'aide de lunettes 3D sont associées aux lignes de l'une des directions de polarisation et à celles de l'autre direction de polarisation.
PCT/DE1997/001286 1996-06-28 1997-06-19 Procede de representation visuelle tridimensionnelle sur une surface de projection a grand ecran a l'aide d'un projecteur a laser WO1998000748A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP97931632A EP0907902B1 (fr) 1996-06-28 1997-06-19 Procede de representation visuelle tridimensionnelle sur une surface de projection a grand ecran a l'aide d'un projecteur a laser
US09/202,444 US6109750A (en) 1996-06-28 1997-06-19 Method for three-dimensional imaging representation on a large-screen projection surface using a laser projector
DE59702290T DE59702290D1 (de) 1996-06-28 1997-06-19 Verfahren zur dreidimensionalen bilddarstellung auf einer grossbildprojektionsfläche mittels eines laser-projektors
JP10503730A JP2000514201A (ja) 1996-06-28 1997-06-19 レーザ式投写機を用いて大型スクリーン投写面に３次元の画像を表示するための方法
AT97931632T ATE196016T1 (de) 1996-06-28 1997-06-19 Verfahren zur dreidimensionalen bilddarstellung auf einer grossbildprojektionsfläche mittels eines laser-projektors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19626096A DE19626096C1 (de) 1996-06-28 1996-06-28 Verfahren zur dreidimensionalen Bilddarstellung auf einer Großbildprojektionsfläche mittels eines Laser-Projektors
DE19626096.5 1996-06-28

Publications (1)

Publication Number Publication Date
WO1998000748A1 true WO1998000748A1 (fr) 1998-01-08

Family

ID=7798372

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/001286 WO1998000748A1 (fr) 1996-06-28 1997-06-19 Procede de representation visuelle tridimensionnelle sur une surface de projection a grand ecran a l'aide d'un projecteur a laser

Country Status (7)

Country Link
US (1) US6109750A (fr)
EP (1) EP0907902B1 (fr)
JP (1) JP2000514201A (fr)
AT (1) ATE196016T1 (fr)
DE (2) DE19626096C1 (fr)
ES (1) ES2151738T3 (fr)
WO (1) WO1998000748A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP2343047A2 (fr) 2000-02-08 2011-07-13 Rice University Nanoparticules actives optiquement à utiliser dans les procédés thérapeutiques et de diagnostic

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GB9811695D0 (en) * 1998-06-01 1998-07-29 Tricorder Technology Plc Facial image processing method and apparatus
US6719719B2 (en) 1998-11-13 2004-04-13 Elan Pharma International Limited Spike for liquid transfer device, liquid transfer device including spike, and method of transferring liquids using the same
WO2002042999A2 (fr) * 2000-11-03 2002-05-30 Actuality Systems, Inc. Systemes d'affichage tridimensionnel
KR20020073054A (ko) * 2001-03-14 2002-09-19 한국과학기술연구원 다층영상 표현시스템 및 그 방법
DE10135418B4 (de) * 2001-07-20 2004-07-15 Jenoptik Ldt Gmbh Rasterprojektion eines Bildes mit hin- und hergehender Lichtstrahlführung
GB2382881A (en) * 2001-12-10 2003-06-11 Wynne Willson Gottelier Ltd Digital image projector with deflector array
US7184104B2 (en) * 2002-05-03 2007-02-27 Hewlett-Packard Development Company, L.P. Projector having scanning optics
US20040109480A1 (en) * 2002-12-06 2004-06-10 Vandruff Dean Atmosperic light beam projection apparatus and method
DE10332275B4 (de) * 2003-07-10 2005-05-04 Deutsches Zentrum für Luft- und Raumfahrt e.V. Panorama-Bildprojektor
US20050093818A1 (en) * 2003-11-05 2005-05-05 Lightbay Networks Corporation Dynamic laser projection display
US20080241262A1 (en) * 2004-03-29 2008-10-02 The University Of Houston System Nanoshells and Discrete Polymer-Coated Nanoshells, Methods For Making and Using Same
JP2006047421A (ja) * 2004-07-30 2006-02-16 Canon Inc 表示光学系および画像投射装置
US20100231868A1 (en) * 2009-03-13 2010-09-16 Alvis Technologies Inc. Display device
US20130176407A1 (en) * 2012-01-05 2013-07-11 Reald Inc. Beam scanned display apparatus and method thereof
CN104297928B (zh) * 2013-07-15 2017-03-01 台达电子工业股份有限公司 立体显示装置与应用其的投影方法

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EP0211596A2 (fr) * 1985-08-07 1987-02-25 STREET, Graham Stewart Brandon Dispositif d'affichage d'images à haute définition
DE4125241A1 (de) * 1991-07-26 1993-01-28 Michael Dipl Phys Sollinger Laserprojektor
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JPS59176720A (ja) * 1983-03-26 1984-10-06 Fuotoron:Kk 立体映写装置
EP0211596A2 (fr) * 1985-08-07 1987-02-25 STREET, Graham Stewart Brandon Dispositif d'affichage d'images à haute définition
DE4125241A1 (de) * 1991-07-26 1993-01-28 Michael Dipl Phys Sollinger Laserprojektor
US5485225A (en) * 1993-07-23 1996-01-16 Schneider Elektronik Rundfunkwerke Gmbh Video projection system using picture and line scanning

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP2343047A2 (fr) 2000-02-08 2011-07-13 Rice University Nanoparticules actives optiquement à utiliser dans les procédés thérapeutiques et de diagnostic

Also Published As

Publication number Publication date
EP0907902B1 (fr) 2000-08-30
DE19626096C1 (de) 1997-06-19
JP2000514201A (ja) 2000-10-24
ATE196016T1 (de) 2000-09-15
DE59702290D1 (de) 2000-10-05
EP0907902A1 (fr) 1999-04-14
US6109750A (en) 2000-08-29
ES2151738T3 (es) 2001-01-01

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